Numerical Noise Transfer Analysis of a Flexible Supported Gearbox Based on Impedance Model and Noise Transfer Function

Ren Yafeng; Chang Shan; Liu GengWang HaiweiBao Xueliang

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Numerical Noise Transfer Analysis of a Flexible Supported Gearbox Based on Impedance Model and Noise Transfer Function

机译：Numerical Noise Transfer Analysis of a Flexible Supported Gearbox Based on Impedance Model and Noise Transfer Function

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To investigate the gearbox radiation noise properties under various rotational speeds, a noise prediction method based on impedance model and noise transfer function (NTF) is proposed. One only needs to extract the NTF of the housing once rapid gearbox noise prediction under different working conditions is realized. Taking a flexible supported gearbox as a research object, the external excitation of the housing (the bearing excitation load and isolator excitation load) is calculated through a gear-housing-foundation-coupled impedance model, and the noise transfer function is simulated through the vibroacoustic-coupled boundary element model; then the radiation noise is obtained. Based on this model, the noise transfer analysis of the housing is carried out, different excitation components and NTF components are compared, and the contributions of different excitation components to noise are compared. Results show that the radiation noise of gearbox is mainly excited by the high-speed bearing, while the low-speed bearing and isolator have little influence on noise. At low speed, vertical force, axial force, and moment excitation of bearings all contribute to the radiation noise while at high speed, the gearbox radiation noise is mainly generated by vertical excitation force of bearings.

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《Mathematical Problems in Engineering: Theory, Methods and Applications》 |2020年第8期|1294609.1-1294609.15|共15页
作者
Ren Yafeng; Chang Shan; Liu GengWang HaiweiBao Xueliang;
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作者单位

Taiyuan Univ Sci & Technol, Sch Mech Engn, Taiyuan 030024, Peoples R China|Northwestern Polytech Univ, Shaanxi Engn Lab Transmiss & Controls, Xian 710072, Peoples R China;

Northwestern Polytech Univ, Shaanxi Engn Lab Transmiss & Controls, Xian 710072, Peoples R China|Harbin 703 Res Inst, Harbin 150036, Peoples R China;

Northwestern Polytech Univ, Shaanxi Engn Lab Transmiss & Controls, Xian 710072, Peoples R China;

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Numerical Noise Transfer Analysis of a Flexible Supported Gearbox Based on Impedance Model and Noise Transfer Function

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